158S is the updated version for 158 (SNAP SWITCH VS MERCURY SWITCH)

and check for a dirty evaporator coil or blocked ductwork that could be causing heat buildup

utilizing WiFi connectivity for remote monitoring and adjustments via the Watts Home mobile app

It is commonly used with TCS Basys hardware and most major BAS brands

the unit is a direct replacement for Nordyne 921693

Nidec-US Motors 6653 Motor 321702-401 158S is the updated versionThe Nidec US Motors 6653 Motor (Model M055TZH0095015B) is a professional grade 1 HP ECM programmable motor engineered for high efficiency blower applications. Designed as a versatile HVAC replacement motor, this brushless permanent magnet motor operates on 115V or 208 230V single phase power, delivering 1075 RPM within a standard NEMA 48 frame. It serves as a direct replacement motor for several S1 series furnace blowers, eliminating the need for